Checking for accuracy

(2 sqrt6 - 4 sqrt3)(4 sqrt6 + 8 sqrt3)
I used the FOIL method
2sqrt6 * 4sqrt6 + 2sqrt6 * 8sqrt3 - 4sqrt3 * 4sqrt6 - 4sqrt3 * 8sqrt3
12sqrt36 - 32sqrt9
I got alittle stuck here but I then I realized what the next step was
12 * 6 - 32 * 3
72 - 96
-24


If this is correct I think I am on the right track...Thanks

Quote:

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Originally Posted by Brama Bull

(2 sqrt6 - 4 sqrt3)(4 sqrt6 + 8 sqrt3)
I used the FOIL method
2sqrt6 * 4sqrt6 + 2sqrt6 * 8sqrt3 - 4sqrt3 * 4sqrt6 - 4sqrt3 * 8sqrt3
12sqrt36 - 32sqrt9
I got a little stuck here but I then I realized what the next step was
12 * 6 - 32 * 3
72 - 96
-24


If this is correct I think I am on the right track...Thanks

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The only mistake is that red 12, which should be 8 (so the answer is –48, not –24).